A new study on bismuth doped oxide glasses.
A new study on bismuth doped oxide glasses.
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DOI：
10.1364/oe.20.015692
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发表时间：
2012-07
期刊：
影响因子：
3.8
通讯作者：
Wenbin Xu;M. Peng;Zhijun Ma;G. Dong;J. Qiu
中科院分区：
文献类型：
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作者：
Wenbin Xu;M. Peng;Zhijun Ma;G. Dong;J. Qiu
本文对铋掺杂硼酸盐、硅酸盐和磷酸盐玻璃的光谱性质进行了重新研究。结果表明，Bi（3+）的典型衰减时间为500 ns，而不是Parke和Webb报道的2.7-3.9 μs。在硼酸盐玻璃中引入较高含量的碱金属或碱土金属有利于Bi（3+）的发光。随着含量的增加，激发峰有规律地红移，而发射峰有规律地红移。黄-里斯因子表明，这是由于铋与玻璃基质之间的耦合减弱，并可以在组态坐标图的框架内解释。相应地，随着铋浓度的增加，激发和发射都红移。通过与Bi（2+）掺杂材料的比较，从激发光谱和发射寿命的角度，确定了铋掺杂钙镁磷酸盐玻璃中红色发射的未知来源为Bi（2+）物种。在仪器限值内，这些玻璃中未检测到近红外（NIR）发射。
Spectroscopic properties of bismuth doped borate, silicate and phosphate glasses have been reinvestigated in this work. It shows the typical decay time of Bi(3+) is around 500ns rather than 2.7-to-3.9 μs reported by Parke and Webb at room temperature. Introduction of higher content either alkali or alkali earth into borate glasses favors the Bi(3+) emission. As the contents increase excitation peak shifts regularly red while emission peak shows reverse trend. This, as revealed by Huang-Rhys factor, is due to the weakening of coupling between bismuth and glass host, and it can be interpreted within the frame of configurational coordinate diagrams. Differently, as bismuth concentration increases, both the excitation and emission shift red. The unknown origin of red emission from bismuth doped calcium or magnesium phosphate glass has been identified as Bi(2+) species on the basis of excitation spectrum and emission lifetime particularly after comparing with Bi(2+) doped materials. No near infrared (NIR) emission can be detected in these glasses within instrument limit.